package com.code.springboot.config;

import com.code.springboot.common.JacksonObjectMapper;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.cbor.MappingJackson2CborHttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import javax.imageio.spi.ImageInputStreamSpi;
import java.util.List;

/**
 * @program: springboot
 * @create: 2022-08-09 17:11
 **/

/**
 * 扩展消息转换器
 */
@Configuration
@Component
public class WebmvcConfig implements WebMvcConfigurer {
    @Override

    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {

        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();

        //设置对象转换器，底层使用Jackson将Java对象转换为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());

        //将上面消息转换器对象追加到mvc框架的转换器集合内
        converters.add(0,messageConverter);

    }
}
